class_docstr: Datasets type for 'None' values.
code: def default_value(cls) -> Literal[None]:
      return None
  
file_path: pennylane/pennylane/data/attributes/none.py
imports: from typing import Literal, Tuple, Type
  from pennylane.data.base.attribute import DatasetAttribute
  from pennylane.data.base.hdf5 import HDF5Array, HDF5Group
label_desc: Use image node_id 1 for calling the DatasetNone obj's underlying member method code with example usage: obj.default_value(cls) and returns: None